Latest Terrestrial planets Stories
Observers on Earth have tracked Venus and Mercury crossing the face of the Sun countless times, but the phenomenon has never been observed from another planet – until now.
The planets of our solar system come in two basic flavors, like vanilla and chocolate ice cream.
Astronomers announced on Monday that they have discovered a new type of planet - a rocky world weighing 17 times as much as Earth.
After eight years in orbit, ESA’s Venus Express has completed routine science observations and is preparing for a daring plunge into the planet’s hostile atmosphere.
NASA’s MESSENGER spacecraft has uncovered evidence that Mercury has contracted far more than previously believed over the past four billion years, according to research appearing in Sunday’s edition of the journal Nature Geoscience.
A new paper argues that some planetary bodies may hold 'superhabitable' environments even more suitable for life than those found here on Earth.
It seems like the discovery of Earth-like planets is always announced with one caveat – the planet discovered probably isn’t much like Earth. Many of these are "super-Earths,” which are several times larger than our own planets and thought to be completely covered in water.
One billion years from now, all the water on Earth could disappear, making it barren like Venus, and the culprit isn’t climate change. It’s the Sun, according to a new study published in the journal Nature.
What was believed to be the first-ever discovered planet to be comprised largely of diamond most likely does not have a high content of the precious mineral after all.
With some inspiration by the Cassini team's plans to image the Earth on July 19, scientists working with NASA's MESSENGER spacecraft orbiting Mercury are preparing to catch the Earth in a series of images taken of natural satellites around the Sun's closest planet.
Terrestrial Planet -- A terrestrial planet is a planet that is mostly composed of silicate rocks and may or may not have a relatively thin atmosphere. The term is derived from the Greek word for Earth, so an alternate definition would be those planets that are more Earth-like than not. Terrestrial planets are very different from gas giants, which may or may not have solid surfaces and are composed mostly of hydrogen and helium in various physical states. Only one terrestrial planet,...
The Planet Venus is the second planet from the sun. It is often called the evening star or morning star and is brighter than any object in the sky except the sun and the moon. Because its orbit lies between the sun and the orbit of the earth, Venus passes through phases like those of the moon, varying from a large bright crescent when the planet is near inferior conjunction (nearest the earth) to a smaller silvery disk when it is at superior conjunction (farthest from the earth). Since...
The Planet Mercury -- in astronomy, nearest planet to the sun, at a mean distance of 36 million mi (58 million km); its period of revolution is 88 days. Mercury passes through phases similar to those of the moon as it completes each revolution about the sun, although the visible disk varies in size with respect to its distance from the earth. Because its greatest elongation is 28, it is seen only for a short time after sunset or before sunrise. Since observation of Mercury is...
The Planet Mars -- in astronomy, 4th planet from the sun, with an orbit next in order beyond that of the earth. Physical Characteristics Mars has a striking red appearance, and in its most favorable position for viewing, when it is opposite the sun, it is twice as bright as Sirius, the brightest star. Mars has a diameter of 4,200 mi (6,800 km), just over half the diameter of the earth, and its mass is only 11% of the earth's mass. The planet has a very thin atmosphere consisting...
Earth -- in geology and astronomy, fifth largest planet of the solar system and the only planet definitely known to support life. Gravitational forces have molded the earth, like all celestial bodies, into a spherical shape. However, the earth is not an exact sphere, being slightly flattened at the poles and bulging at the equator. The equatorial diameter is c.7,926 mi (12,760 km) and the polar diameter 7,900 mi (12,720 km); the circumference at the equator is c.24,830 mi (40,000 km)....
- Emitting flashes of light; glittering.